Marrubium vulgare L.
Diagnostic description:
Morphology > General A widespread plant of Eurasia, introduced into the New World and Australasia, grown as a herb
Morphology > General > Habit Perennial herb to 0.5 m tall
Morphology > Leaves Leaves petiolate, broadly ovate, 20-30(-50) × 20-30(-50) mm, crenate, tomentose to lanate
Morphology > Reproductive morphology > Inflorescences Inflorescence lax with verticils many-flowered, dense
Morphology > Reproductive morphology > Flowers > Calyx Calyx 4-8 mm long, tubular with 10 spreading, subulate, hooked teeth
Morphology > Reproductive morphology > Flowers > Corolla Corolla white, 7-10 mm long, 2-lipped
Morphology > Reproductive morphology > Flowers > Androecium > Stamens Stamens 4, included in corolla tube
Taxonomic name: